Skip native parser when calling mongo

Native parser is actually [slower](https://groups.google.com/forum/#!topic/node-mongodb-native/q2X6lHu84I4) than the JS one.

- Remove { safe: true } option.
- Misc: use single quotes for strings.
Update deps

- Loosen up Express requirements
- Bump gulp-uglify
- Add jshint-stylish
- Bump gulp-ruby-sass and gulp-jshint versions
Make JSHint ignore public assets
Renamed `src` dir

Move `src` directories under `assets` folder.
Add markers to maps

- [WIP] Add TW Bootstrap
- [WIP] Add markers to maps
- Update location error messages
- Use function scope for strict calls
Refactor gulp tasks

- Improve `watch` for coffee and JS files.
- Remove unnecessary growl notifications.
- Refactor nodemon calls.
- Streamline asset minification
- Trim whitespace